Cortelco 8780 Instruction Manual page 5

11. In Use/New
a. Will light up when the unit is in use.
b. Will flash when the unit has a new call.
c. Will flash when the unit is on hold.
12. - Speakerphone/Headset Button
a. Press for handsfree dialing and speak without lifting the
handset.
b. Plug in headset to change to headset mode. Press to talk
or to end the call.
13. Message Waiting/Ringing Indicator - Will flash when the unit has
message waiting information or when it is ringing.
14.
a. While on-hook, press and hold for 3 seconds to adjust
the ringer volume.
b. While using the speakerphone, press to adjust the
speaker-phone volume.
c. While using the handset, press to adjust the handset
volume.
15. Flash - Provides a line break signal for accessing PBX services or Call
Waiting from your local telephone company.
16. Dialing Keys (0-9,*,#)
17. CLID - Review Up and Review Down Buttons
a. Press to review Caller ID Records
b. While in menu, use to select telephone settings.
18. Speaker
19. Wall Mounting Hook - Turn 180 degrees to hang up the handset
when the unit is mounted on the wall.
20. Hookswitch - Press to end a call.
21. Handset Hook - When the unit is mounted on the wall, this is used to
hang up the handset without hanging up the line.
- Volume Adjustment Buttons
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